Features
■ Axial/radial leaded
■ Fully compatible with current industry
standards
■ Weldable nickel terminals
■ Very low internal resistance
■ RoHS compliant*
■ Agency recognition:
Applications
Any application that requires extra protection
at elevated ambient temperatures, which the
100 °C trip temperature provides.
■ Rechargeable battery pack protection
■ Cellular phones
■ Laptop computers
MF-LS Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
*RoHS COMPLIANT
Environmental Characteristics
Operating/Storage Temperature ........................... -40 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................ 125 °C
Passive Aging ....................................................... +85 °C, 1000 hours ............................................... ±10 % typical resistance change
Humidity Aging ..................................................... +85 °C, 85% R.H. 7 days ..................................... ±5 % typical resistance change
Vibration ............................................................... MIL-STD-883C,..................................................... No change
Condition A
Test Procedures And Requirements For Model MF-LS Series
Test Test Conditions Accept/Reject Criteria
Visual/Mech. .................................................... Verify dimensions and materials ...................... Per MF physical description
Resistance ....................................................... In still air @ 23 °C ............................................. Rmin ≤ R ≤ R1max
Time to Trip ...................................................... At specifi ed current, Vmax, 23 °C ................... T ≤ max. time to trip (seconds)
Hold Current .................................................... 30 min. at Ihold ................................................ No trip
Trip Cycle Life .................................................. Vmax, Imax, 100 cycles ................................... No arcing or burning
Trip Endurance ................................................ Vmax, 48 hours ................................................ No arcing or burning
UL File Number ............................................... E 174545S
CSA File Number ............................................. CA 110338
TÜV File Number ............................................. R2057213
Electrical Characteristics
Thermal Derating Chart - Ihold/ Itrip (Amps)
Model Ambient Operating Temperature
-40 ºC -20 ºC 0 ºC 23 ºC 40 ºC 50 ºC 60 ºC 70 ºC 85 ºC
MF-LS100S 1.80 / 4.50 1.60 / 4.00 1.40 / 3.50 1.00 / 2.50 0.80 / 2.00 0.70 / 1.75 0.60 / 1.50 0.40 / 1.00 0.20 / 0.50
MF-LS180 3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
MF-LS180L 3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
MF-LS180S 3.10 / 6.54 2.60 / 5.49 2.20 / 4.64 1.80 / 3.80 1.30 / 2.74 1.10 / 2.32 0.90 / 1.90 0.60 / 1.27 0.20 / 0.42
MF-LS190 3.30 / 7.29 2.80 / 6.19 2.40 / 5.31 1.90 / 4.20 1.40 / 3.09 1.20 / 2.65 1.10 / 2.43 0.70 / 1.55 0.40 / 0.88
MF-LS190RU 3.30 / 7.29 2.80 / 6.19 2.40 / 5.31 1.90 / 4.20 1.40 / 3.09 1.20 / 2.65 1.10 / 2.43 0.70 / 1.55 0.40 / 0.88
MF-LS260 4.30 / 8.60 3.70 / 7.40 3.10 / 6.20 2.60 / 5.20 1.90 / 3.80 1.60 / 3.20 1.40 / 2.80 1.10 / 2.20 0.60 / 1.20
MF-LS300 5.10 / 10.7 4.40 / 9.24 3.70 / 7.77 3.00 / 6.30 2.30 / 4.83 1.90 / 3.99 1.60 / 3.36 1.20 / 2.52 0.60 / 1.26
MF-LS340 5.50 / 11.0 4.70 / 9.40 4.00 / 8.00 3.40 / 6.80 2.60 / 5.20 2.20 / 4.40 1.90 / 3.80 1.50 / 3.00 0.80 / 1.60
NOTE: Slotted option available on all models.
LS
0144T
190
Model V max.
Volts
I max.
Amps
Ihold Itrip Initial
Resistance
1 Hour (R1)
Post-Trip
Resistance
Max. Time
to Trip
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip Min. Max. Max. Typ.
MF-LS100S 24 100 1.0 2.5 0.070 0.130 0.260 5 7.0 1.5
MF-LS180 24 100 1.8 3.8 0.040 0.068 0.120 9 2.9 2.0
MF-LS180L 24 100 1.8 3.8 0.040 0.068 0.120 9 2.9 2.0
MF-LS180S 24 100 1.8 3.8 0.040 0.068 0.120 9 2.9 2.0
MF-LS190 24 100 1.9 4.2 0.030 0.057 0.100 10 3.0 1.9
MF-LS190RU 15 100 1.9 4.2 0.030 0.057 0.100 10 3.0 1.9
MF-LS260 24 100 2.6 5.2 0.025 0.042 0.076 13 5.0 2.3
MF-LS300 24 100 3.0 6.3 0.015 0.031 0.055 15 4.0 2.0
MF-LS340 24 100 3.4 6.8 0.016 0.027 0.050 17 5.0 2.7
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
MF-LS Series - PTC Resettable Fuses
Product Dimensions
Model ABCDF
Pkg.
Style
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
MF-LS100S 20.9
(0.823)
23.1
(0.909)
4.9
(0.193)
5.2
(0.205)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
3.8
(0.150)
4.1
(0.161) S
MF-LS180 24.0
(0.945)
26.0
(1.024)
4.9
(0.193)
5.2
(0.205)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
3.8
(0.150)
4.1
(0.161) Std.
MF-LS180L 35.0
(1.38)
37.5
(1.48)
4.9
(0.193)
5.6
(0.22)
0.6
(0.024)
1.0
(0.039)
9.6
(0.38)
10.0
(0.40)
3.8
(0.150)
4.2
(0.17) Std.
MF-LS180S 24.0
(0.945)
26.0
(1.024)
4.9
(0.193)
5.2
(0.205)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
3.8
(0.150)
4.1
(0.161) S
MF-LS190 21.3
(0.839)
23.4
(0.921)
10.2
(0.402)
11.0
(0.433)
0.5
(0.020)
1.1
(0.043)
5.0
(0.197)
7.6
(0.299)
4.8
(0.189)
5.4
(0.213) Std.
MF-LS190RU 19.8
(0.780)
20.8
(0.819)
13.3
(0.524)
14.3
(0.563)
0.4
(0.016)
0.76
(0.030)
8.1
(0.319)
9.5
(0.374)
3.8
(0.150)
4.1
(0.161) RU
MF-LS260 24.0
(0.945)
26.0
(1.024)
10.8
(0.425)
11.9
(0.469)
0.6
(0.024)
1.0
(0.039)
5.0
(0.197)
7.0
(0.276)
5.9
(0.232)
6.1
(0.240) Std.
MF-LS300 28.4
(1.118)
31.8
(1.252)
13.0
(0.512)
13.5
(0.531)
0.5
(0.020)
1.1
(0.043)
6.3
(0.248)
8.9
(0.350)
6.0
(0.236)
6.6
(0.260) Std.
MF-LS340 24.0
(0.945)
26.0
(1.024)
14.8
(0.583)
15.9
(0.626)
0.6
(0.024)
1.0
(0.039)
4.0
(0.158)
5.0
(0.197)
6.0
(0.236)
6.1
(0.240 Std.
Packaging: Bulk - 500 pcs. per bag.
Tape and Reel - Consult factory. DIMENSIONS: MM
(INCHES)
Typical Part Marking
Represents total content. Layout may vary.
NOTE: Longer lead option available. Consult factory.
F
B
D D
A
FB
D D
A
D
B
FF
A
C C
C
SLIT NOMINAL
0.5
(.020)
4.0
(.157)
X
Terminal material: quarter-hard nickel
Standard Style “RU” Style“S” Style
MANUFACTURER'S
TRADEMARK PART
IDENTIFICATION
LOT NO.
(T = TAIWAN
S = CHINA)
LS180
0144T
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
MF-LS Series - PTC Resettable Fuses
Typical Time to Trip at 23 ˚C How to Order
MF - LS 100 S - __
Multifuse® Product
Designator
Series
LS = Axial Leaded “Strap”
Component
Hold Current, Ihold
100-340 (1.0 Amps - 3.40 Amps)
Lead Option
S = Slotted Lead Option
RU = Radial Lead Option
Packaging Options
- __ = Bulk Packaging
- 2 = Tape and Reel*
*Packaged per EIA486-B
MF-LS, REV. J, 05/11
0.001
1 10 100
1
10
Fault Current (Amps)
Time to Trip (Seconds)
MF-LS100S
MF-LS180S
MF-LS180L
MF-LS180
MF-LS190
MF-LS190RU
MF-LS260
MF-LS300
MF-LS340
MF-LS models offer trip temperatures lower than MF-S models for extra protection at
elevated temperatures.
MF-S, MF-LS, MF-LR and MF-VS Series Tape and Reel Specifi cations
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
DIMENSIONS: MM
(INCHES)
Taped Component Dimensions
PASTEBOARD
HOLD
PASTEBOARD
HOLD
4.0 ± 0.2
(.157 ± .008)
2.0
(.079)
RADIUS
DIA.
13.0
(.512)
DIA.
1.0 + 0.1/ -0
(.039 + .004/-0)
5.56 ± 0.10
(.219 ± .004)
4.0 ± 0.1
(.157 ± .004)
12.0 ± 0.1
(.472 ± .004)
48.0 ± 0.3
(1.90 ± .012)
0.2
(.008)MAX.
330
(13.0)
8.0 ± 0.2
(.315 ± .008)
Reel Dimensions
